高原地区春小麦籽粒增重与小穗位及粒位的关系

本研究从小穗位及粒位角度，探讨了青海高原地区四个春小麦品种（系）籽粒增重过程中的形态和重量变化。结果表明，供试品种（系）中部与上下部小穗籽粒的长宽和干重，或有本质差异，或因环境条件影响而产生差异，或无显著差异，同部位小穗不同粒位间籽粒长度，干重的变化也呈同样状况，因此，我们可以培养新品种，并培养栽培措施影响其发育过程，尽量减小中部与上下部，不同粒位间籽粒的差异，加强其发育过程中的同步性，物质供应的

Relationship Between Grain Weight Gain and Spikelet Position,Grain Position in Qinghai Plateau

We did some research with three varieties and one line in Qinghai plateau. It was about grain shape and weight change during grain weight gain. We examined the process from spikelet and grain position angles. The results showed:it was different that the grain length,width and dry weight changed between middle part and top,bottom part spikelet of the varieties (line). Some had significant differences, some had differences due to environment effect,others had no significantal differences. Among the grains of middle part or top,bottom part spikelets, the grain length, width and dry weight changed as same case as mentioned above. The grains differences can be reduced as little as possible through breeding new varieties and using advanced cultural technology. To strengthen synchroneity of grain developing and balance of material supply. To promote raising of spring wheat per unit area yield continually and steadily.